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| WITH table1 AS
(
SELECT 'A1' pere, 'A1' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A11' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A12' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A13' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A111' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A112' fils FROM dual
UNION ALL SELECT 'A1' pere, 'A121' fils FROM dual
UNION ALL SELECT 'A11' pere, 'A11' fils FROM dual
UNION ALL SELECT 'A11' pere, 'A111' fils FROM dual
UNION ALL SELECT 'A11' pere, 'A112' fils FROM dual
UNION ALL SELECT 'A12' pere, 'A12' fils FROM dual
UNION ALL SELECT 'A12' pere, 'A121' fils FROM dual
UNION ALL SELECT 'A13' pere, 'A13' fils FROM dual
UNION ALL SELECT 'A111' pere, 'A111' fils FROM dual
UNION ALL SELECT 'A112' pere, 'A112' fils FROM dual
UNION ALL SELECT 'A121' pere, 'A121' fils FROM dual
UNION ALL SELECT 'A2' pere, 'A2' fils FROM dual
UNION ALL SELECT 'A2' pere, 'A21' fils FROM dual
UNION ALL SELECT 'A2' pere, 'A22' fils FROM dual
UNION ALL SELECT 'A21' pere, 'A21' fils FROM dual
UNION ALL SELECT 'A22' pere, 'A22' fils FROM dual) |
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